Decomposition of N₂O Over Uncalcined Limestone Under Elevated CO₂ Partial Pressure Conditions

Abstract

Catalytic activity of uncalcined limestone to decompose N₂O was evaluated with a quartz fixed bed reactor at 1123K under elevated CO₂ partial pressure conditions to suppress decomposition of CaCO₃. The rate of SO₂ capture was also measured for uncalcined limestone. The rate of N₂O decomposition over uncalcined limestone was found to be more than two order of magnitude lower than that of SO₂ capture. The rate of N₂O decomposition over uncalcined limestone was more than three order of magnitude lower than N₂O decomposition rate over calcined limestone.